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  2. HTML form - Wikipedia

    en.wikipedia.org/wiki/HTML_form

    Sample form. The form is enclosed in an HTML table for visual layout. Forms are enclosed in the HTML <form> element. This HTML element specifies the communication endpoint the data entered into the form should be submitted to, and the method of submitting the data, GET or POST. Elements. Forms can be made up of standard graphical user interface ...

  3. JSON Web Token - Wikipedia

    en.wikipedia.org/wiki/JSON_Web_Token

    JSON Web Token ( JWT, suggested pronunciation / dʒɒt /, same as the word "jot" [1]) is a proposed Internet standard for creating data with optional signature and/or optional encryption whose payload holds JSON that asserts some number of claims. The tokens are signed either using a private secret or a public/private key .

  4. W3C Markup Validation Service - Wikipedia

    en.wikipedia.org/wiki/W3C_Markup_Validation_Service

    W3C Markup Validation Service. Tag certifying that a website has been checked for well-formed XHTML (above) and CSS (below) markup. The Markup Validation Service is a validator by the World Wide Web Consortium (W3C) that allows Internet users to check pre-HTML5 HTML and XHTML documents for well-formed markup against a document type definition.

  5. Universally unique identifier - Wikipedia

    en.wikipedia.org/wiki/Universally_unique_identifier

    These octets are a host ID in the form allowed by the specified address family. Later, the UUID was extended by combining the legacy family field with the new variant field. Because the family field only had used the values ranging from 0 to 13 in the past, it was decided that a UUID with the most significant bit set to 0 was a legacy UUID.

  6. Document type definition - Wikipedia

    en.wikipedia.org/wiki/Document_Type_Definition

    A document type definition ( DTD) is a specification file that contains set of markup declarations that define a document type for an SGML -family markup language ( GML, SGML, XML, HTML ). The DTD specification file can be used to validate documents. A DTD defines the valid building blocks of an XML document.

  7. Central Authentication Service - Wikipedia

    en.wikipedia.org/wiki/Central_Authentication_Service

    The Central Authentication Service ( CAS) is a single sign-on protocol for the web. [1] Its purpose is to permit a user to access multiple applications while providing their credentials (such as user ID and password) only once. It also allows web applications to authenticate users without gaining access to a user's security credentials, such as ...

  8. Help:Markup validation - Wikipedia

    en.wikipedia.org/wiki/Help:Markup_validation

    Help:Markup validation. The W3C Markup Validation Service lets editors check web pages for conformance to HTML and XHTML standards. It is helpful for catching minor problems such as duplicate section names or citation IDs. Although most major browsers will tolerate many of the errors, and will display a document successfully even if it contains ...

  9. CAPTCHA - Wikipedia

    en.wikipedia.org/wiki/Captcha

    A CAPTCHA ( / ˈkæp.tʃə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam. [1] The term was coined in 2003 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper, and John Langford. [2]